Briquette and process of making the same



Patented Apr. 1, 19.24.

omen s'rarss PATENT orsic s.

GEORGE w. LOVE,

OF MOHRLAND, UTAH, ASSIGNOR- OF ONE-HALF TO C. G. GI BBONS,

05E MOHRLAND, UTAH.

BRIQUETTEAND PROCESS OF MAKING THE N Drawing.

To all whom it may concern:

Be it known that I, Gnonen W. Love, a citizen of the United States, and a resident of Mohrland, in the county of Emery and State of Utah, have invented certain new 0 manufacture of and useful Improvements in Briquettes and Processes of Making the Same, of which the following is a specification.

This invention relates to a process for the briquettes from lignite or bituminous coal and which will be especially adapted for use in steam ships, railroads, factories and general household purposes.

It has been proposed to employ certain elements in the manufacture of briquettes, as sulphur, in such proportions that fumes resulting from the combustion of the fuel would be dangerous to life. It has also been proposed to employ sulphates in combination with powdery coal for the manufacture of briquettes in such quantities that the elements are not only wasted but part of the heat units of the coal is required to break down these wasted materials with the consequence that more fuel is required to maintain a certain degree of heat than is neces sary. Again, too small a quantity of the sulphates are employed which have no effect Whatever upon the finished product when consumed.

Furthermore, excessive quantities of asphaltum has been employed as a binder in the liquid state which necessitates the use of additional machinery.

It is an object of this invention to pro vide a briquette by an economical process and in which the quantities of the materials employed are so proportioned that the best results are obtained with the consequent elimination of smoke and clinkers and with the elimination of the danger of poisonous gases and flue fires.

A further object of the invention is the provision of a briquette wh'ch may be manufactured with a minimum of machinery, thus aiding materially in a reduction in the cost of the fuel.

In the production of my briquette I use 93% coal dust, coal slack or lump coal and this is run through a crusher or pulverizer. From the pulverizer the dust is carried through a dryer heated to a temperature b tween 210 to 215 Fahr. The treatment in the dryer not only drives off all the moisture but volatile matter which is contained Application filed October 17, 1923.

Serial No. 669,122.

in the coal is destroyed to'a certain extent leaving a greater amount of fixed carbon. From the dryer the coal is elevated to the mixing room. In the mixing room the chemicals and asphaltum proper proportion by an automatic machine and then discharged into the coal dust. The elements which I employ in combination with the coal dust consist of 4 .15% asphaltum which is adapted to bind the coal together and act as a water-proofing cement.

1% of charcoal is a second element of the mixture and serves three functions,

1st, to increase the fixed carbon.

2nd, to increase the heat units.

3rd, to eliminate soot.

Epsom salts, the third element, is employed in the proportion of. 1% and its object is to render the briquettes odorless and smokeless.

3% of 1% of sulphur constitutes the fourth element of the mixture and is for the purpose,

1st, to increase the heat units.

2nd, to harden the briquettes.

3rd, to promote coking tendencies.

Asphaltum is employed in the powdered form instead of the liquid since the liquid asphalt requires additional labor and machinery.

The elements of the mixture, when properly proportioned together with the coal dust are charged into a steam jacketed mixer which is heated to 240 Fahr. During he process of mixing and heating a chemical action takes place, causing the coal to flux and at the same time aiding in the removal of foreign matter which causes smoke and soot. When the compound has become plastic it is then delivered to the mold or press for forming briquettes and a pressure of 2500 pounds to the square inch is required for the manufacture of the best class of briquettes. The finished product is then carried by a conveyor to a place of storage for shipment.

While it has been proposed to use Epsom salts, powdered alum and plaster of Paris which belong to the class of sulphates and perform the same function, it must be noted that the required quantity of sulphate must be employed for the most beneficial results and where a greater quantity than 1% is employed the materials are Wasted and where a less quantity than 1% of Epsom salts is llO 2. A briquette comprising a homogeneous mass of coal dust, charcoal, Epsom salts, and sulphur bound together by asphaltum.

3. A Water proof homogeneous mass of 93 parts of coal dust, 1 part of charcoal, 1 part of Epsom salts, 9 part of sulphur bound together with 41 parts of asphaltum.

i. The process of making briquettes which comprises heating together 93 parts coal dust, ll; parts of dry asphaltum, 1 part of charcoal, 1 part of Epsom salts, part of sulphur, and forming'the plastic mass into briquettes under pressure.

GEORGE 1V. LOVE. 

